@thesis{thesis, author={Harisakesya I Kadek and Putri Tri Wahyu Oktaviana}, title ={PEMASANGAN INSTALASI PENDINGIN TAMBAHAN PADA RUANG BATERAI DI UNIT 1-4 PLTU UP SURALAYA}, year={2019}, url={http://156.67.221.169/1650/}, abstract={Battery performance or battery lifetime is very important in term of power plant performance especially during black out. If battery condition based on maintenance data is less than 80% from nominal voltage that is written on the battery nameplate, the average temperature is more than 25°C , and the density is less thank 1.24 Kg/L, those conditions can decrease battery performance to supply the equipments that are supplied by battery.In field, if there is one damaged battery it can affect another batteries to breakdown not long after it as the previous damaged one. Battery lifetime also depends on the operation and maintenance. Its lifetime can reach 10-15 years as long as the temperature of battery is not more than 20°C. Otherwise, on temperature 20°C, the battery capacity will be reduced. Thus, to optimize battery lifetime and its capacity, the optimum temperature is 25°C If the baterai can reach the Lifetime according to the manufacturer, it can reduce the cost of purchasing batteries and can reduce the waste caused batteries that are not used or have been replaced with new batteries.} }